AD7305YRZ-REEL

Overview

The AD7305YRZ-REEL is a quad, 8-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. It features four independent voltage-output channels with rail-to-rail buffered swings, operating from single +3 V to +5 V or ±5 V supplies. The device utilizes a fast parallel interface for data loading and includes an internal power-on reset that initializes outputs to zero scale. Key electrical specifications include a maximum settling time of 1 µs, integral nonlinearity (INL) and differential nonlinearity (DNL) of ±1 LSB, and a reference multiplying bandwidth of 2.6 MHz. Power consumption is less than 9 mW at 3 V, with a shutdown current of 40 µA.

Feature Summary

• Quad 8-bit DAC architecture with true rail-to-rail output buffers
• Fast parallel interface with standard address decode and WR control
• Internal power-on reset ensures zero-scale output state at turn-on
• Hardware shutdown capability via A0/SHDN pin reduces current to 40 µA

Applications

• Automotive output span voltage control
• Instrumentation and digitally controlled calibration systems
• Pin-compatible replacement for AD7226 in applications with VDD < 5.5 V

Procurement Notes

Verify the specific suffix 'Y' against the manufacturer's official ordering guide to confirm the designated temperature range and package variant. Confirm the '-REEL' designation matches the required tape and reel quantity for automated assembly processes.

Selection Notes

Select this component when a parallel interface is preferred over serial options within the AD730x family. Ensure the system design accommodates the 20-pin TSSOP footprint and provides appropriate bypassing (0.01 µF and 1 µF) near the VDD and VSS pins to maintain analog performance.

Part Context

This part belongs to the AD7304/AD7305 series of low-power, 8-bit DACs. While the AD7304 offers a serial SPI-compatible interface, the AD7305 variant provides a parallel input structure. Both share identical internal R-2R ladder designs and buffer characteristics, differing primarily in digital control logic and pin count.

Replacement Considerations

The datasheet identifies the AD7305 as a pin-compatible replacement for the industry-standard AD7226 when operating with supply voltages below 5.5 V.